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Lead-based alloy standard sample for detecting content of impurities in raw material lead of lead-acid storage battery and preparation method of lead-based alloy standard sample

A technology of lead-acid batteries and lead-based alloys, which is applied to the preparation, sampling, and analysis of materials for testing, and can solve problems affecting the detection of impurity content, inaccurate standard curves, and waste of raw materials, so as to improve accuracy, Effects of preventing lead oxidation and burning of raw materials

Active Publication Date: 2021-11-19
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lead alloy prepared by this method is used in industries such as electrolytic zinc, electrolytic copper, and storage batteries, and can be adapted to large-scale production of lead alloys, but it is not suitable for preparing lead-based alloys for the detection of impurity content in lead-acid battery raw material lead. Standard sample, the reason is that: on the one hand, the method is complicated to operate, and the amount of raw materials required for alloy preparation in a vacuum melting furnace is relatively large, which is easy to cause waste of raw materials; on the other hand, it is difficult to strictly control the impurities in the lead alloy Element content and distribution uniformity will lead to inaccurate standard curves obtained by using lead-based alloy standard samples, which will affect the detection of impurity content in lead samples of lead-acid battery raw materials

Method used

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  • Lead-based alloy standard sample for detecting content of impurities in raw material lead of lead-acid storage battery and preparation method of lead-based alloy standard sample
  • Lead-based alloy standard sample for detecting content of impurities in raw material lead of lead-acid storage battery and preparation method of lead-based alloy standard sample
  • Lead-based alloy standard sample for detecting content of impurities in raw material lead of lead-acid storage battery and preparation method of lead-based alloy standard sample

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preparation example Construction

[0036] A preparation method of the lead-based alloy standard sample, such as figure 1 shown, including the following steps:

[0037] (1) electrolytic lead (lead content ≥ 99.996wt%, Bi content<0.0008wt%), impurity simple substance (analytical pure), refined tin, electric furnace, high-density graphite crucible, ingot mold are moved in glove box, described refined The ratio of the mass of tin to the total mass of impurities, refined tin and electrolytic lead is 1.6-2.0:100, and the follow-up operation is carried out in an inert gas atmosphere of a glove box;

[0038] (2) Impurity simple substance and refined tin are prepared into master alloy;

[0039] (3) Put the electrolytic lead into a high-density graphite crucible, heat it to 380-400°C with an electric furnace, remove the slag to remove the insoluble impurities in the lead liquid, and obtain the lead liquid after the slag removal;

[0040] (4) After heating the lead liquid after deslagging to 700-750°C with an electric f...

Embodiment 1

[0043] A lead-based alloy standard sample used for detection of impurity content in lead raw materials for lead-acid batteries, including lead, impurities and tin; the impurities are cobalt, chromium, barium, manganese, tellurium, selenium and silicon. The lead-based alloy standard samples include #1 to #10 ten standard samples with different impurity element contents.

[0044] After preparing standard samples #1 to #10 respectively according to the following steps, the lead-based alloy standard samples used for the detection of the impurity content in the raw material lead of lead-acid batteries were obtained:

[0045] (1) electrolytic lead (lead content is 99.998wt%, Bi content is 0.0005wt%), impurity simple substance (analytical pure) (comprising cobalt, chromium, barium, manganese, tellurium, selenium and silicon), refined tin, electric furnace, The high-density graphite crucible and ingot mold are moved into the glove box, and the subsequent operations are carried out in ...

Embodiment 2

[0051] A lead-based alloy standard sample used for detection of impurity content in lead raw materials for lead-acid batteries, including lead, impurities and tin; the impurities are cobalt, chromium, barium, manganese, tellurium, selenium and silicon. The lead-based alloy standard samples include #1 to #10 ten standard samples with different impurity element contents.

[0052] After preparing standard samples #1 to #10 respectively according to the following steps, the lead-based alloy standard samples used for the detection of the impurity content in the raw material lead of lead-acid batteries were obtained:

[0053] (1) electrolytic lead (lead content is 99.998wt%, Bi content is 0.0005wt%), impurity simple substance (analytical pure) (comprising cobalt, chromium, barium, manganese, tellurium, selenium and silicon), refined tin, electric furnace, The high-density graphite crucible and ingot mold are moved into the glove box, and the subsequent operations are carried out in ...

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Abstract

The invention relates to the technical field of lead-acid storage batteries, and discloses a lead-based alloy standard sample for detecting the content of impurities in raw material lead of a lead-acid storage battery and a preparation method of the lead-based alloy standard sample. The lead-based alloy standard sample comprises lead and impurities; and the impurities comprise one or more of cobalt, chromium, barium, manganese, tellurium, selenium and silicon. The preparation process is carried out in an inert gas atmosphere, and the preparation process comprises the following steps of preparing an intermediate alloy from an impurity simple substance and refined tin; after the lead is heated, fishing out slag, and removing insoluble impurities in the lead liquid; heating the slag-removed lead liquid, adding the intermediate alloy, carrying out stirring, carrying out mixing and preserving heat to obtain a lead-based alloy liquid; and casting the lead-based alloy liquid into a lead ingot to obtain the lead-based alloy standard sample. The preparation method disclosed by the invention can be suitable for small-scale preparation of the lead-based alloy standard sample, the input amount of raw materials is small, the content of each element in the prepared lead-based alloy standard sample is close to a theoretical value, and impurity elements are uniformly distributed.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a lead-based alloy standard sample used for detection of impurity content in the raw material lead of lead-acid batteries and a preparation method thereof. Background technique [0002] In the production process of lead-acid batteries, since most of the raw materials used in the production of lead alloys are waste lead-acid battery plates and other recycled lead alloys, the content and types of impurities in recycled lead are likely to be higher than those in primary lead. In order to reduce the impact of impurity elements in lead alloys on the performance of lead-acid batteries, it is necessary to use photoelectric spark direct reading spectrometer or inductively coupled plasma spectrometer (ICP) to detect the content of impurity elements in raw lead. Using a photoelectric spark direct reading spectrometer or an inductively coupled plasma spectrometer to detect the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C11/06G01N1/28
CPCC22C1/03C22C11/06G01N1/28G01N2001/2893
Inventor 李佩文刘涛王丽付兰章谢爽
Owner CHAOWEI POWER CO LTD